Canadians who own cars with U.S. licence plates are making huge efforts to make sure that their vehicles don't get vandalized. 

It's no secret that U.S. licence plates have been less than well-received in Canada since the border between the two countries first closed back in March. 

(1) Hey @jjhorgan. I’m a born and raised BC boy residing in St Albert, AB. Helped my daughter move to her new place in Victoria this past weekend, contributed a couple grand to the local economy woke up to this in Kamloops today. Too much faith in the good of BC, I suppose. pic.twitter.com/Olx3XVSKnk

— Terry Evans (@iamterryevans) August 4, 2020

B.C. Premier John Horgan recently suggested that visitors from outside the province could  "use public transit," "get their plates changed" or "ride a bike" to avoid trouble from locals. 

One owner of a vehicle with California plates in Vancouver made it very clear that they are abiding by the province's quarantine rules. 

This car with U.S. plates in Vancouver wants to make sure you know it's Canadian. Understandable.

Watch BEING CANADIAN on DVD & Streaming at: Amazon, YouTube, Tubi & iTunes! #Canada #CdnFilm #comedy #moose #maplesyrup #documentary #Canadian #sorrynotsorry pic.twitter.com/zwP3jE5qZU

— Being Canadian 🇨🇦 (@BeCanadianMovie) August 19, 2020

"I am Canadian and have completed my 14 day quarantine," read a sign posted on the side of the car. 

The note was also accompanied by a maple leaf sticker, for extra Canadian emphasis. 

This isn't the first time that owners of cars with U.S. licence plates have been forced to explain themselves in Canada. 

Another vehicle was spotted with a hand written notice across their back window. 

Spotted on Vancouver streets, car with California plates and message reads:
Relax
I'm Canadian
Finished Quarantined...#canadian #donetheirtime #Quarantine #streetsofvancouver #COVID__19 #vancouver #COVIDbc pic.twitter.com/wBrL26opWK

— Michelle Valancius (@yougoventi) August 17, 2020

"Relax. I'm Canadian. Finished Quarantine," it read. 

Meanwhile, Canadians keep reporting sightings of cars with U.S.plates all over the country.

USA Americans driving around Lake Louise.
I suppose they could be Canadian residents, or here on work visas. Or for some other legitimate reason. pic.twitter.com/KGXG7E1pdK

— Paul Doroshenko, Q.C. (@PaulDoroshenko) August 11, 2020

While many Americans work in Canada, some of the visitors are almost certainly here for leisure purposes.

In Ontario, last week, I saw a car from New Jersey, with a canoe on the top of his car heading North towards cottage country. Maybe he lives here or works here or something?

— DD (@displaydezign) August 11, 2020

The U.S. Canada border closure keeps getting extended and right now it will remain closed until at least Sept. 21.